In the end I ended up writing my own Taylor series based approximation. It is faster but also has a flaw, whenever the input x was less than -0.8 or greater than 0.8 it would deviate heavily. So to look correct, it had to fall back to std::asin() past these bounds.
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，详情可参考viber
Российская армия уничтожила воевавшего за ВСУ наемника-трансвестита17:37
set-frame-name, great for multi-frame workflows